Richard t



R. T. NEWTON.

Patented June 10, 1919.

3 SHEETSSHEET I.

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I I W I i 5 I 7 I; 55-35 50 233 121-1; 5%; I I, f 1111 III: I: o l IlNVE/VTO/i 4 I BY R. T. NEWTON.

RADIATOR INDICATOR.

APPLICATION FILED OCT. 20, 191].

Patented June .10, 1919.

3 SHEETSSHEET 2.

AT T OR/VE Y6.

R. T. NEWTON.

RADIATOR INDICATOR.

APPLICATION FILED OCT. 20. 1917.

3 SHEETSSHEET 3.

Patented June 10, 1919.

. uh t INVENTOR fiMn/J 1 M M. may I automobile radiator.

3101mm) T. NEwToN, or NEW YoRK, N. Y.

RADIATOR-INDICATOR.

Specification of Letters Patent. Patented June 10, 1919.

Application filed October 20, 1917. Serial No. 197,573.

To all whom it may concern Be it known that I, RICHARD T. NEWTON,

a citizen of the United States of America,

and residing in the city, county, and State of New York, have invented acertain new and useful Improvement in Radiator-Indicators, of which thefollowing is a specification.

My invention relates to radiator indicators and particularly to a devicefor graphically displaying the amount of water in the radiator tank ofan explosion engine, the object of my invention being to provide. aneflicient device which may be cheaply made and readily carried by a capsuch as is now commonly used to cover the fill opening for an In theaccompanying drawings,

Figure 1 is a side elevation of a radiator partially broken away and inwhich my invention is embodied in one form;

Fig. 2 is a vertical section through the cap and indicator alone;

Fig. 3 is a view similar to Fig. 1 showing the indicator in a differentposition;

Figs. 4 and 5 are horizontal sections on the lines 4-4, 55, Fig. 2,respectively; and

Figs. 6, 7 and 8 are vertical sections through indicator devices ofmodified construction.

Referring to the construction shown in Figs. 1 to 5, my invention ishere shown applied to an automobile radiator 10 having the usual fillpipe 11 o ening to the interior 12 of the radlator'tanli and throughwhich the cooling water 13 is introduced. The pipe 11 is externallytapped as usual at its outer end to receive a closure cap 14, carrying asealing washer 15. "This cap I have utilized to support a float-'actuated indicator by which the level of the water 13 in the radiator10 may be readily ascertained.

To this end, the cap 14 and washer 15 are centrally pierced in registerto accommodate the indicator which comprises an elongated float chamber16 in the form of a pipe bearing against the inner face of the cap topand internally tapped at its upper end to receive a threaded thimble 17.The flange 18 of the latter bears against the outer face of the cap thusclamping the float chamber and indicator to the cap. The indicatorchamber is formed above the thimble 17 by a spacing ring 19 and a toppiece 20, the latter being secured by bolts 21 passing downwardtherethrough and'taking into tapped holes in the thimble 17.

Within the indicator chamber I mount a rotary dial 22 attached by abridge piece 23 to a central hub 24- fast with spindle 25. The latterpasses down through a guide hole in the diaphragm 26 of the thimble 17,and through a bracket 27 secured inside the float chamber. At the lowerend of the spindle is rigidly secured a lever arm 28 having at its outerend an eye through which passes one arm 29 of a hairpin stem, the otherarm 30 of which passes through ahole in the bracket 27. The float 31 isattached to the lower end of the arm 29 and rises or falls in the floatchamber 16 in accordance with the level of the water 13 in the radiatorchamber 12. Inasmuch as the arms 29 and 30 are divergent, it is obviousthat when the float 31 is up (Fig.1), the lever arm 28 will take adifferent angular position from that which it takes when the float fallswith the lowering level of the water 13 in the radiator chamber.Inasmuch as the spindle 25 and the indicator dial 22 are rotated withthe lever 28, they offer a ready means for disclosing the condition ofthe water level in the radiator reservoir.

Various types of dial may be employed which would be suitably actuatedby the mechanism described, and I do not limit the dial construction tothat shown. The dial 22 illustrated, however, comprises an annulushaving at intervals vertical bars 32, painted red thereon, which aremoved past windows 33 formed in the spacing ring 19. As here indicated,the spacing ring 19 1s of glass and the windows are formed by a band ofmetal 34 in which the windows 33 are cut. To accentuate the indicationthe windows are made V-shape and the indicator bars 32 move from thenarrow end of the windows to the large ends thereof as the water levellowers. When the radiator is full, the bars 32 are substantially hiddenby the blank spaces 35 between adjacent windows.

In order to prevent vibration of the float and dial when the car is inmotion and the from the float' chamber.

. cient communication between the float chamber and the tank but alsoaifords a dash-pot action which serves to maintain the water in thefloat chamber substantially quiescent. A vent hole 38 is drilled throughthe pipe near its upper end to permit the free escape of air. Surfaceadhesion of the sides of the float to the inner walls of the floatchamber 16 is prevented by' providing a. series of small teats 39 on theouter face of the float, which serve to space the surfaces apart.

In order to insure theproper operation of the hairpin stem 29, 30, thespacing between the arms when the float is inits uppermost position, issuch that the lever arm' 28 lies to one side of a plane passing throughthe two holes in the bracket 27 and consequently the lever 28 is neveronadead center. To insure this off-center position, irrespective of theexact level to which the radiator is filled, a stop is provided by theengagement of the crossbar 23 (Fig. 4) with the screw bolts 21 whichthus limit the arcuate travel of the indicator and thus the angularmovement of I the lever 28.

In the modification shown in Fig. 6 the radiator cap 40 is provided withan integral tubular extension 41 which forms the float chamber, and witha housing 42 for the indicator 43. The latter is carried at the upperend of the stem 44, rigid with the float 45. Slots 46, in the housing42, afl'ord sight apertures through which the indicator 43 may beobserved. These slots may be closed by transparent windows 47 of glassor the like. A cap 48, at the lower end of the float chamber, limits thedownward movement of the float and affords, through its aperture 49, aport for the admission of water to the float chamber from the radiator.Obviously in this construction the movement o-f-the indicator 43 is indirect accord with the rise or fall of the water level in the radiatorand the housing 42 must consequently be of considerable height to bepractical.

In Fig. 7 I have shown a further modification in which the cap 50 isprovided with an upstanding flange 51 with windows 52 and a top closure53 housing the indicator.

when the radiator is full. As the float 45 falls, the spires of thespring 55 separate thus gradually bringing the indicator 54 downwardinto vision at the windows 52.

In Fig. 8 I have illustrated still another arrangement in which theindicator moves upward,'instead of downward, as the float 45 falls. Inthis case the radiator cap 61 also has a housing flange, but the windows62 are formed in the upper portion of the latter instead of in the lowerportion as in Fig. 7. The indicator chamber is closed by a screw top 63which, in similar manner, holds a transparent closure 64 inside theflange. The dial 60 is carried by the terminal links 65, 66, of a lazytongs arrange-- ment 67, jointed at its lower end 68 to the float 45,'andhaving pin and slot arrangements 69, 70, between the links 65 and 66at its upper end and the indicator. As the float 45 falls, the dial 60is lifted and comes gradually opposite the windows 62.

It is obvious'that while in Fig. 6 the movement of the indicator 43 isexactly commensurate with the rise or fall of the water in the radiator,in the remaining constructions the movement of the indicator ismaterially less than but in preciseratio to that of the float. Thisfeature is highly desirable since it minimizes the height required forthe indicator chamber, while at the same time afl'ording an ample rangeof movement for the float.

It will be noted that in Figs. 6, 7 and 8 I have shown the float tubeand portion of the indicator chamber integral with the radiator cap andthis feature could be embodied in the construction illustrated in Figs.1 to 5 by making the tube 16 integral with the cap, as also the flange18 and diaphragm 26. Similarly, the closure at the lower end of thefloat chamber may, in any of the construction, be accomplished by meansof a supplemental cap 48.

Various modifications in detail of construction and operation willreadily occur to those skilled in the art, which donot depart from whatI claim as my invention.

I claim 1. An indicator for automobile radiators, comprisin a rotarydial, a float, a V-shaped pin carrie by the float, and a fixed abutment,the branches of said V-shaped pin having a sliding engagementrespectively with a dial member and said abutment to cause the dial torotate on the rise or fall of the float.

2. In a construction such as specified in claim 1, a rod depending fromthe dial and rigid therewith and having an offset arm engaged by onebranch of the V-shaped pin.

3. An indicator for automobile radiators comprising a radiator cap, atubular .chamber extending downward therefrom into the radiator tank, afloat "arranged in said chamber, a V-shaped pin carried by said float,an abutment on the side of said chamber engaged by one branch of theV-shaped pin, an indicator housing above the cap, a rotary indicator, arod depending therefrom, an offset arm mounted on said rod and engagedby the other branch of the V-shaped pin on the float whereby theindicator is oscillated by the rise or fall of the float substantiallyas described.

In testimony whereof I have signed my name to this specification.

RICHARD T. NEWTON.

